[Reactions of the circulatory system to static load in athletes and persons less well trained]

Different cardiovascular responses were assessed in untrained men (1 group) and sportsmen (2 group). The 2 group responses were more economic due to effective vascular reactions, whereas in the 1 group the increase of blood flow during exercise was provided ba cardiac output and to a lesser extent by vascular reactions. Physiological value of the responses and vegetative prognostic criteria of fatigue limiting physical work, are discussed.